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beef8a367c
freebsd-dev/sys
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Julian Elischer beef8a367c This solves a deadlock that can occur when read()ing into a file-mmap() 
space. When doing this, it is possible to for another process to attempt
to get an exclusive lock on the vnode and deadlock the mmap/read
combination when the uiomove() call tries to obtain a second
shared lock on the vnode. There is still a potential deadlock
situation with write()/mmap().
Submitted by: Matt Dillon <dillon@freebsd.org>
Reviewed by: Luoqi Chen <luoqi@freebsd.org>
Delimmitted by tag PRE_MATT_MMAP_LOCK and POST_MATT_MMAP_LOCK
in kern/kern_lock.c kern/kern_subr.c
1999-03-12 03:09:29 +00:00
..
alpha Keyboard driver update in preparation for the USB keyboard driver. 1999-03-10 10:36:53 +00:00
amd64 Increased kernel virtual address space to 1GB. NOTE: You MUST have fixed 1999-03-11 18:28:46 +00:00
boot Sync with sys/boot/i386/loader/Makefile revision 1.30. 1999-03-10 13:41:44 +00:00
cam People who wanted the "tagged opening" message can boot -v. The rest 1999-03-11 10:48:02 +00:00
coda Removed a bogus cast to c_caddr_t. This is part of terminating 1999-01-29 07:23:53 +00:00
compat Fix thread/process tracking and differentiation for Linux threads emulation. 1999-03-02 00:28:09 +00:00
compile
conf Increased kernel virtual address space to 1GB. NOTE: You MUST have fixed 1999-03-11 18:28:46 +00:00
contrib Need to include /contrib/dev/oltr/... not dev/oltr/... 1999-03-10 17:45:26 +00:00
ddb Fixed -Wcast-qual warnings. 1999-02-12 12:44:19 +00:00
dev Fixed variable overflow problem. 1999-03-11 18:50:39 +00:00
fs This code got moved as a result of confusion between union mounts and 1999-02-28 16:13:25 +00:00
geom Fixed variable overflow problem. 1999-03-11 18:50:39 +00:00
gnu Don't depend on <ufs/ufs/quota.h> or another (old) prerequisite including 1999-03-06 05:21:09 +00:00
i4b update the i4b include files to i4b release 0.71.00 1999-03-07 16:09:45 +00:00
i386 Increased kernel virtual address space to 1GB. NOTE: You MUST have fixed 1999-03-11 18:28:46 +00:00
isa Keyboard driver update in preparation for the USB keyboard driver. 1999-03-10 10:36:53 +00:00
isofs/cd9660 Don't comment out dead code; remove it. 1999-01-31 11:54:29 +00:00
kern This solves a deadlock that can occur when read()ing into a file-mmap() 1999-03-12 03:09:29 +00:00
libkern Fix warnings in preparation for adding -Wall -Wcast-qual to the 1999-01-28 02:26:20 +00:00
miscfs This code got moved as a result of confusion between union mounts and 1999-02-28 16:13:25 +00:00
modules Oops. Adding a Makefile might help anyone who wants to use streams 1999-02-22 14:02:42 +00:00
msdosfs Fix warnings in preparation for adding -Wall -Wcast-qual to the 1999-01-27 22:42:27 +00:00
net Submitted by: Larry Lile 1999-03-10 10:11:43 +00:00
netatalk Fix warnings in preparation for adding -Wall -Wcast-qual to the 1999-01-27 22:42:27 +00:00
netatm Fix warnings in preparation for adding -Wall -Wcast-qual to the 1999-01-28 00:57:57 +00:00
netinet Fix the 'fwd' option to ipfw when asked to divert to another machine. 1999-03-12 01:15:57 +00:00
netipx * Change sysctl from using linker_set to construct its tree using SLISTs. 1999-02-16 10:49:55 +00:00
netkey #ifdef out unused function key_freetables. 1999-01-12 12:38:31 +00:00
netnatm Examine all occurrences of sprintf(), strcat(), and str[n]cpy() 1998-12-04 22:54:57 +00:00
netns
nfs Reviewed by: Many at differnt times in differnt parts, 1999-03-12 02:24:58 +00:00
nfsclient Reviewed by: Many at differnt times in differnt parts, 1999-03-12 02:24:58 +00:00
nfsserver Untangle the nfs send and receive queue locking a little. One lock 1999-02-25 00:03:51 +00:00
ntfs Added limited write ability. Now we can use some kind 1999-02-19 12:31:02 +00:00
pc98 Keyboard driver update. 1999-03-10 14:51:53 +00:00
pccard Updated to use new APIC (SMP) safe interrupt register/unregister 1999-03-10 15:00:54 +00:00
pci Make even more of the PPSAPI implementations generic. 1999-03-11 15:09:51 +00:00
posix4 * Change sysctl from using linker_set to construct its tree using SLISTs. 1999-02-16 10:49:55 +00:00
powerpc Removed all traces of `p_switchtime'. The relevant timestamp is per-cpu, 1999-02-28 10:53:29 +00:00
rpc
svr4 svr4 emulator will refuse to unload itself if it is currently in use. 1999-02-04 12:43:17 +00:00
sys Reviewed by: Many at differnt times in differnt parts, 1999-03-12 02:24:58 +00:00
tools Declare static __inline functions as __inline in their forward 1999-02-28 11:30:00 +00:00
ufs Stop the mfs from trying to swap out crucial bits of the mfs 1999-03-12 00:44:03 +00:00
vm Stop the mfs from trying to swap out crucial bits of the mfs 1999-03-12 00:44:03 +00:00
Makefile Backed out previous commit. It depends on a.out utilities and libraries 1998-12-30 12:06:08 +00:00